Question

abc7+5778=7abc tim abc

đúng 3like nhe

Answer 1

abc x 10 + 7 + 5778 = 7000 + abc

abc x 10 - abc = 7000 - 5778 - 7

abc x 9 = 1215

abc = 1215 : 9

abc = 135

vậy abc = 135

Answer 2

10 x abc+7 + 5778 = 7000+abc

9 xabc = 1215

abc = 1215 : 9

abc = 135

Answer 3

abc7+5778=7abc

abc x 10+7+5778=7000+abc

abc x 10-abc=7000-5778-7

abc x(10-1)=1215

abc x 9=1215

abc=1215:9

abc=135